Preliminary Discussion about Protection of Electrical Equipments and

Lines in Explosive and Dangerous Atmospheres

Peng Bo（Jiangsu Both Engineering Co.，Ltd.，Wuxi 214072，Jiangsu Province，China）

Abstract The principles of type selection for electrical equipments in explosive and dangerous atmospheres，the meanings of explosion-proof marks of electrical equipments，the selection of explosion-proof types as well as material selection，laying, and connection of electrical lines are introduced.

Key words　Explosive and dangerous atmosphere　Selection of electrical equipments　Protection measures of the lines

摘　要　介绍了爆炸危险环境中电气设备的选型原则，电气设备防爆标志的含义及防爆类型的选择，以及电气线路的选材、敷设与连接。

关键词　爆炸危险环境　电气设备选择　线路防护措施